Getting different String from snapshot.getKey(); and mAuth.getUid(); Without .push();

Question

String I am getting from snapshot.getKey(); is different from any other String, although I am not doing push() if i virtually compare the values of my mAuth.getUid(); string and snapshot.getKey(); they both are same, but programmatically it is not showing. I tried concatinating my snapshot.getKey(); string in textView.setText(snapshot.getKey();); also but nothing is shown in the screen.

Please note I am not posting my whole Fragment code.

In the code below the if statement is not getting true value.

FirebaseUser mAuth = FirebaseAuth.getInstance().getCurrentUser();

FirebaseDatabase database = FirebaseDatabase.getInstance();
DatabaseReference databaseReference = database.getReference();
DatabaseReference userref = databaseReference.child("Votes").child("Chat");    

final HashMap<String, String> hash = new HashMap<>();

    likeButton = (ImageView) view.findViewById(R.id.heartImage);

    likeButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            hash.put("chatVoteLike", "Yes, I would like it");
            userref.child(mAuth.getUid()).setValue(hash);
            likeButton.setImageResource(R.drawable.red_heart);
        }
    });


    userref.orderByKey().addValueEventListener(new ValueEventListener() {
        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {
            for (DataSnapshot snapshot : dataSnapshot.getChildren()){

               String uID = snapshot.getKey();
                Log.i("uId from", "firebase ---" + uID);

              if (uID == mAuth.getUid()){
                  likeButton.setImageResource(R.drawable.red_heart);
              }
            }
        }

        @Override
        public void onCancelled(DatabaseError databaseError) {

        }
    });

So you basically say that `mAuth.getUid()` and `snapshot.getKey()` return different result, right? — Alex Mamo, Nov 19 '18 at 19:50
Yes, virtually the results are same but Programmatically they are different, although both are String . — kvadityaaz, Nov 19 '18 at 19:56
@AlexMamo yes, it is always false. Even i checked values of both in logcat, it was same, but the condition is false. — kvadityaaz, Nov 19 '18 at 20:23
Where in code are you checking that condition and you say that in the logcat are the same? — Alex Mamo, Nov 19 '18 at 20:28
@AlexMamo look from bottom 12th line if (uID == mAuth.getUid()){ likeButton.setImageResource(R.drawable.red_heart); } — kvadityaaz, Nov 19 '18 at 20:31
Possible duplicate of https://stackoverflow.com/questions/513832/how-do-i-compare-strings-in-java/513839#513839 — Sergey Glotov, Nov 19 '18 at 20:58
Try using `uID.equals(mAuth.getUid())` instead of `uID == mAuth.getUid()` — Jantzilla, Nov 20 '18 at 00:27

score 3 · Accepted Answer · answered Nov 20 '18 at 04:36

3

The problem is Solved using using uID.equals(mAuth.getUid()) instead of uID == mAuth.getUid()

answered Nov 20 '18 at 04:36

kvadityaaz

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Getting different String from snapshot.getKey(); and mAuth.getUid(); Without .push();

1 Answers1